an electrocardiographic complex consisting of the Q, R, and S waves
Medical » Tests
What does QRS mean?
QRS complex is a group of waves seen on an electrocardiogram, representing ventricular depolarization. The QRS complex is sometimes called the QRS wave. QRS wave in electrocardiogram has been arbitrarily labeled in alphabetical order. The Q wave is a short downwards deflection, the R wave a conspicuous upwards stroke, and the S wave a return to below the level of the base-line.